<%--
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  User: Asus
  Date: 2025/4/1
  Time: 14:59
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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>实时效验用户名</title>
  <style>
    .success{color:green;}
    .error{color:red};
    </style>
  <script src="js/jquery-3.7.1.js"></script>
</head>
<body>
  <form>
    <label>用户名:</label>
</body>
</html>
